Toxic erythema of the neonate Hidradenitis suppurativa

Toxic erythema of the neonate (erythema toxicum, erythema toxicum neonatorum) is a very common, self-limiting disorder that presents as an asymptomatic erythematous macular rash usually in the first few days of life. Very rarely, the eruption occurs a week or more after birth. It affects up to 50% of neonates. In survey studies from Japan, Australia, China and India, toxic erythema was found in 40.8%, 34.8%, 33.7% and 20.6% of infants, respectively. It may be associated with papules, and occasionally pustule formation is evident. It most often involves the forehead, face, chest, trunk and extremities. Lesions usually resolve in a few days. Its etiology is obscure.